Year | Value | 2022 | 138,496 | 2021 | 137,927 | 2020 | 141,844 | 2019 | 140,385 | 2018 | 139,446 | 2017 | 139,275 | 2016 | 139,758 | 2015 | 139,177 | 2014 | 138,845 | 2013 | 138,915 | 2012 | 139,818 | 2011 | 141,921 | 2010 | 145,243 | 2009 | 148,187 | 2008 | 150,084 | 2007 | 151,359 | 2006 | 152,200 | 2005 | 153,022 | 2004 | 154,610 | 2003 | 156,747 | 2002 | 158,359 | 2001 | 160,106 | 2000 | 169,211 | 1999 | 174,306 | 1998 | 177,901 | 1997 | 180,774 | 1996 | 182,368 | 1995 | 182,987 | 1994 | 182,514 | 1993 | 178,743 | 1992 | 174,096 | 1991 | 174,784 | 1990 | 170,968 | 1989 | 158,126 | 1988 | 147,484 | 1987 | 140,955 | 1986 | 137,549 | 1985 | 139,195 | 1984 | 145,161 | 1983 | 150,822 | 1982 | 155,070 | 1981 | 158,605 | 1980 | 162,216 | 1979 | 166,027 | 1978 | 169,515 | 1977 | 172,246 | 1976 | 174,304 | 1975 | 175,899 | 1974 | 176,553 | 1973 | 175,473 | 1972 | 172,298 | 1971 | 166,851 | 1970 | 159,436 | 1969 | 150,950 | 1968 | 142,492 | 1967 | 135,081 | 1966 | 129,058 | 1965 | 123,788 | 1964 | 117,803 | 1963 | 109,866 | 1962 | 99,739 | 1961 | 88,854 | 1960 | 80,548 |
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